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Functionalised metal-organic frameworks: a novel approach to stabilising single metal atoms

Functionalised metal-organic frameworks: a novel approach to stabilising single metal atoms

Szilágyi, P. Á., Rogers, D. M., Zaiser, I., Callini, E., Turner, S., Borgschulte, A., Züttel, A., Geerlings, H., Hirscher, M. and Dam, B. (2017) Functionalised metal-organic frameworks: a novel approach to stabilising single metal atoms. Journal of Materials Chemistry A, 5 (30). pp. 15559-15566. ISSN 2050-7488 (Print), 2050-7496 (Online) (doi:10.1039/C7TA03134C)

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Abstract

We have investigated the potential of metal-organic frameworks for immobilising single atoms of transition metals using a model system of Pd supported on NH2-MIL-101(Cr). Our Transmission Electron Microscopy and in-situ Raman spectroscopy results give evidence for the first time that functionalised metal-organic frameworks may support, isolate and stabilise single atoms of palladium. Using Thermal Desorption Spectroscopy we were able to evaluate the proportion of single Pd atoms. Furthermore, in a combined theoretical-experimental approach, we show that the H-H bonds in a H2 molecule elongate by over 15% through the formation of a complex with single atoms of Pd. Such deformation would affect any hydrogenation reaction and thus the single atoms supported on metal-organic frameworks may become promising single atom catalysts in the future.

Item Type: Article
Uncontrolled Keywords: Metal-organic frameworks, Immobilisation of single atoms, Sigma complex, Hydrogen activation
Subjects: Q Science > QC Physics
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Department of Pharmaceutical, Chemical & Environmental Sciences
Last Modified: 25 Sep 2017 14:16
Selected for GREAT 2016: None
Selected for GREAT 2017: GREAT a
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/17438

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